Polymers at an interface; a simplified view

Gennes, P. G. de

doi:10.1016/0001-8686(87)85003-0

Cited by 1,563 publications

(1,268 citation statements)

References 28 publications

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“…As was noted by deGennes, [36][37][38]52 this length can be much smaller than the Flory radius of blocks A. We assume that the hole has a perfect cylindrical shape (see Figure 2).…”

Section: The Perforated Film Modelmentioning

confidence: 94%

“…In the region of the adsorbed A monomer, the structure is that of a melt, and in the regions where the B monomers are adsorbed, the structure is the same as the self-similar structure that was described for the homopolymer adsorption case. [36][37][38] Assuming the validity of the assumptions regarding the presence of the contiguous regions of the adsorbed block, there are two alternative pictures that can model the adsorption of the PS-PMMA block copolymer in our experiment. The first picture, the "drops model", shown in Figure 1, represents a case where aggregates of the solvophobic blocks form surface micelles (drops).…”

Section: The Adsorption Modelmentioning

confidence: 99%

“…[36][37][38]52 The adsorption layer in the hole has a fixed structure that is independent of its environment. The hole is larger than a typical correlation length of the self-similar structure in the bottom of the adsorption layer.…”

Section: The Perforated Film Modelmentioning

confidence: 99%

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Adsorption of Block Copolymers from Selective Solvents on Curved Surfaces

Hershkovits

Tannenbaum

2008

Macromolecules

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We have investigated the adsorption of asymmetric poly(styrene-b-methyl methacrylate) block copolymers (PS-PMMA) from a selective solvent onto alumina (Al 2 O 3 ) particles having variable and controllable radii. The solvent used was a bad solvent for the PS block (block A) and a good solvent for the PMMA block (block B), which has a higher affinity of the surface. Such a case represents a new class of adsorption, where both blocks compete for the adsorption sites of the metallic surface. Two theoretical models, the modified drops model and the perforated film model, have been evaluated as appropriate representation of such an adsorption scenario. The experimental results indicated that the adsorption of the PS-PMMA block copolymer generated a patterned surface comprised of a homogeneous melt layer of the PS block perforated with holes having a variable PMMA structure, depending on the distance from the bottom of the hole (alumina surface) and the distance from walls of the hole. The density gradient of the PMMA moiety in the hole reverted to the classical brush morphology at a critical distance from the surface of the hole.

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“…As was noted by deGennes, [36][37][38]52 this length can be much smaller than the Flory radius of blocks A. We assume that the hole has a perfect cylindrical shape (see Figure 2).…”

Section: The Perforated Film Modelmentioning

confidence: 94%

Section: The Adsorption Modelmentioning

confidence: 99%

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Adsorption of Block Copolymers from Selective Solvents on Curved Surfaces

Hershkovits

Tannenbaum

2008

Macromolecules

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“…This leads to an increased osmotic pressure. For brushes the steric repulsion between two similar parallel surfaces separated by a gap x was calculated by de Gennes [827]:…”

Section: Steric Forcesmentioning

confidence: 99%

Force measurements with the atomic force microscope: Technique, interpretation and applications

Butt

Cappella

Kappl

2005

Surface Science Reports

3,198

2,949

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“…The theory of pancake-type adsorption was considered by the seminal work of DeGennes, 3,4 who considered a weakly attracting wall, with the wall-repeat unit interaction length scale equal to A, which is also the repeat unit length. The concentration was semidilute, that is, the concentration was slightly greater than the overlap concentration.…”

Section: Dissolution-dispersionprecipitationmentioning

confidence: 99%

Effects of carbon nanotubes on polymer physics

Grady

2012

J Polym Sci B Polym Phys

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A single carbon nanotube has many similarities with an individual polymer chain including the fact that the end-to-end length of both are often about the same and the diameter of the chain is about the same (for single-walled nanotubes) or only $10 to 20 times larger (for multiwalled nanotubes). The combination of the solid surface and the similarity of the two materials means that polymer physics are altered in manners not seen with any other type of commonly used filler. The purpose of this review is to update a chapter that appears in a recent tome by Grady (2011) and describe how polymer physics is altered in composites that contain carbon nanotubes. Subjects that will be discussed include chain configuration, glass transition, polymer diffusion, unit cells and crystalline superstructure (lamellae, spherulites and shishkebabs), and crystallization kinetics. V C 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 50: 2012

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Polymers at an interface; a simplified view

Cited by 1,563 publications

References 28 publications

Adsorption of Block Copolymers from Selective Solvents on Curved Surfaces

Adsorption of Block Copolymers from Selective Solvents on Curved Surfaces

Force measurements with the atomic force microscope: Technique, interpretation and applications

Effects of carbon nanotubes on polymer physics

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